.middle .middle_down {
    height: 400px;
    border: 1px solid black;
    margin-top: 30px;
}
.middle .middle_down .middle_down_nav {
    height: 50px;
    border: 1px solid black;
}
.middle .middle_down .middle_down_nav ul {
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    width: 600px;
}
.middle .middle_down .middle_down_nav ul li {
    width: 100px;
    height: 50px;
    border: 1px solid black;
}
.middle .middle_down .middle_down_imgs {
    height: 200px;
    border: 1px solid black;
    margin-top: 20px;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}
.middle .middle_down .middle_down_imgs div {
    width: 200px;
    height: 100px;
    border: 1px solid black;
    text-align: center;
}
.middle .middle_down .middle_down_imgs div img {
    width: 150px;
    height: 60px;
    border: 1px solid black;
}
.middle .middle_down .middle_down_imgs div p {
    width: 150px;
    height: 30px;
    border: 1px solid black;
    margin: 0 auto;
}
.middle .middle_down .middle_down_news {
    height: 100px;
    border: 1px solid black;
    margin-top: 20px;
}